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How can a cooling fan leak oil?

Category:

Industry Trends

Release time:

2019-11-06

Cooling fan English name: Cooling fans. Cooling fan, in English: cooling fan. The technology and performance of cooling fans have reached a mature stage, and new technologies continue to emerge. However, many people have found that oil leaks are often caused by cooling fans. Although this situation doesn't occur frequently, the cooling fan itself isn't really a major issue—but it does result in wasted resources. After all, engine oil is quite expensive. Therefore, to prevent this from happening, we must always maintain our cooling fans. Let’s take a closer look with the editor! Cooling fan The cause of the oil leak.
1. The oil supply to the bearing housing is excessive. Lubricating oil is supplied from both sides of the bearing housing. The bearing housing is equipped with oil rings, and the flow rate is controlled by an oil supply throttling valve. If the supply flow rate of the cooling fan is too high, the heat generated by the fan, combined with the rotor’s high-speed operation and the steady rise in oil temperature, will inevitably cause the maximum oil level limit to fall below the actual oil level in the bearing housing, leading to oil seal leakage. Furthermore, excessively high lubricating oil pressure can also result in shaft seal leakage.
2. If the sealing at pipeline connections is not tight enough, the most likely source of oil leakage in the bearing housing is the shaft seal. This can occur if the O-ring and skeleton oil seal on the cooling fan shaft are worn or aged, and if they were improperly assembled during maintenance.
3. If the hydraulic cylinder is leaking oil, it could be due to the hydraulic cylinder of the cooling fan not being tightly sealed or having excessive clearance. If the components are not properly assembled, oil leakage from the hydraulic cylinder may occur.
4. The quality of the lubricating oil does not meet the specifications. Certain timing tests were not conducted in accordance with the prescribed procedures. Particle sizes exceeding the limits can cause wear on rubber seals, while moisture present in clean oils can lead to rusting and damage of servo valves, resulting in oil leaks.
The above are the common causes of oil leakage in cooling fans. Shenzhen Jiangshan Lai Electronic Technology Co., Ltd. is one of the leading enterprises integrating customization, R&D, manufacturing, sales, and service of DC brushless motors, DC cooling fans, DC brushless fans, DC stand-mounted fans, boosted cooling fans, miniature cooling fans, DC cooling fans, DC blowers, and non-standard fans. We are a wholesale manufacturer and supplier of DC fans, with our products enjoying strong sales in Guangdong Province—including Shenzhen, Guangzhou, Dongguan—as well as in Fujian, Zhejiang, and Jiangsu provinces.

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